Hoisting and conveying apparatus.



PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON.

HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED MAY 12.1905.

PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON.

HOISTING AND CONVEYING APPARATUS.

APPLICATION FILED MAY 12. 1905.

3 SHEETS-SHEET Z.

PATENTED DEC. 26, 1905. T. S. MILLER & J. H. DICKINSON. HOISTING ANDCONVEYING APPARATUS.

APPLICATION FILED MAY 12.190".

0 3 SIIBETS--SHEBT 3.

UNITED STATES PATENT OFFICE.

THOMAS SPENCER MILLER, OF SOUTH ORANGE, AND JOSEPH H. DICKINSON, OFMONTOLAIR, NEW JERSEY.

Specification of Letters Patent.

Patented Dec. 26, 1905.

Application filed May 12,1905. Serial No. 260,186-

1'0 all whom it may concern:

Be it known that we, THOMAS SPENCER MILLER, a resident of South Orange,in the county of Essex, and JOSEPH H. DICKINSON,

5 a resident of Montclair, in the county of Essex, State of New Jersey,citizens of the United States, have invented certain new and usefulImprovements in Hoisting and Conveying Apparatus, of which the followingis a specification.

This invention relates to certain novel and useful improvements inhoisting and conveying apparatus, and has particular application tomeans for regulating the tension of overhead cables in apparatus of theclass mentioned.

In logging apparatus the process of gathering the logs gradually rotatesaround the head spar-tree, and as it is necessary to shift the tail endof the main cable from one tail-tree to another it is frequentlyrequiredtoraise and lower such main cable, and especially is this thecase where two main cables are employed, so that while one is beingoperated the rigging crew is at work getting the other in position onthe next run. In such an instance when all the timber adjacent to onemain cable is gathered that cable is dropped by disconnecting it fromthe main-cable connection at the head tree, and the other main cablewhich has already been positioned by the rigger is connected to themain-cable extension and tightened up.

In order to permit the main cables to be readily and expeditiouslyraised and lowered for the purpose of connecting and disconnecting thesame and to permit the cables to be tightened or tensioned to thedesired extent, we have devised means forming the subjectmatter of thisapplication.

Our invention consists in the construction, combination, and arrangementof parts set forth in and falling within the scope of the appendedclaims, and while we have herein shown and described a preferredembodiment of our invention we wish it to be understood that we do notlimit ourselves to the precise details and the particular arrangement ofparts which for the purpose of illustration we 0 have delineated,

In the accompanying drawings like characters of reference indicate likeparts in all the views.

Figure. l is a view illustrating our invention as employed in hauling alog, the position of the mam cable and its connections with themain-cable extension when lowered being shown in dotted lines. Fig. 2shows a slightlymodified form of the invention, in which a swivelpulleyis suspended from the heelblock interposed between the main cable andthe main-cable extensionv Fig. 3 shows still another form of ourinvention, in which case the main-cable extension consists of two guyspi rppes secured to the tightening or heel Referring now to theaccompanying drawings in detail, A indicates a head spar-tree,

adjacent to which is situated the engine B.

5 is the main cable, along which is designed to travel the carriage C,such cable being sup ported and tensioned through the means hereinafterdescribed.

6 is the out-haul rope connected to the drum b of the engine and passingover a sheave-pulley 7, secured to the head-tree, said out-haul ropethence passing over the carriage to the tail-tree (not shown) and backto the carriage, to which it is secured at 8.

9 is a skidding-rope which is attached to the drum B and passes over thesuspended pulley 10 and thence to the carriage O.

The slack pulling-rope of the apparatus is shown at 11, such rope beingattached at one end to the drum B of the engine and after passing overthe block or pulley 12, rigged on the spar-tree, is also secured to thecarriage C. In addition a short skidding extensionrope 13 is employed,to the end of which tongs 14 are attached, said rope being also attachedat one end to the carriage O.

The operation of the apparatus is well known, the out-haul rope beingemployed to draw the carriage along the main cable, and upon arriving atthe point where the log or logs are to be picked up the tongs arelowered to the ground by drawing in the slack pullingrope, and theskidding extension-rope, to the end of which the tongs are attached, isthus paid out to enable the tongs to be hooked to the log. I/Vhen acertain run has been cleared and it is desired to shift the main ca bleor to drop one main cable and substitute another, so that the skiddingoperation may be continuous and not interfered with by the riggers, weemploy the following means: In Fig. 1, 15 is a short rope or main-cableextension passing over the block 16, rigged t0 the spar-tree, while 17and 18 are guy-ropes secured at one end to the end 19 of the shortmain-rope extension and at their opposite ends are looped about stumpsor other anchors 20. The end 21 of the rope 15 is connected to runningheel-block 22, which block is adapted to be detachably connected at 23to the main cable 5. 241 is a rope or line secured to a drum B of theengine, which rope passes over the block 25, suspended from thelead-tree and is reeved in the block 22.

The operation of the device is substantially as follows: If theapparatus is in the position shown in full lines in Fig. 1 and it isdesired to lower the main cable to detach the same and connect up asecond main cable in place of that detached, it is only necessary to payout upon the rope 24, which will run through the heel-block 22 and lowerthe cable, as is shown in dotted lines in said Fig. 1, so that the maincable may rest upon the ground. By withdrawing the pin 26 or otherconnection the main cable may be detached from the block and anothermain cable hooked or connected thereto. By winding in the rope 24% withits engine-drum B the main cable may be raised until it assumes itsnormally elevated position. Through the medium of this arrangement thenecessity of moving the heavy heel-blocks, which are ordinarilyconnected to the stumps or anchors 20, is obviated, and the operation ofskidding is not interfered with to any great extent while the main cableis being changed. Ordinarily it is necessary to consume considerabletime in changing the cable at the head and tail tree, while with ourinvention it has been stated the second main cable, which is attached toanother tail-tree, may be readily connected to the block when lowered tothe ground. in the place of that previously employed. While the newcable is being used, that previously in use may be strung around toanother tailtree and secured thereto ready to be substituted in place ofthe cable in use when the run shall have been logged. In Fig. 2 insteadof securing the guide-block or the rope 24 to the spar-tree we haveshown the same in the form of a swivel-block 25, connected to therunning-block 22, and a second block 27 is secured at the base of thespar-tree, this arrangement enabling us to attain a more directapplication of the tension.

In Fig. 3 instead of employing a single main-cable extension, to whichthe guys are secured, we dispense with the short rope 15 and run theends of the guys over the guidesheave 2S and secure the ends 29 and 30of said guys to the heel-block, as is shown at 31. The tension-rope 24in this case passes from the engine through the block 32, secured to thestump or anchor 33, and thence up and through the block in the ordinarymanner.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

1. The combination of a main cable, a maincable extension, and atensioning device interposed between the main cable and the main-cableextension.

2. The combination of a main cable, a maincable extension and adetachable tension device connecting the main cable and the maincableextension.

3. The combination of a main cable, a maincable extension, arunning-block connecting the main cable and main-cable extension, anengine and a tension-rope for the block operated by said engine.

4. In a conveying apparatus the combina tion with a head-spar and maincable, of a guy, a main-cable extension secured to said guy at thehead-spar, and a tension device connecting the main-cable extension andthe main cable.

5. In a conveying apparatus the combination with. a head-support, a maincable along which. the carriage is adapted to travel,means for raising,lowering and tensioning the main cable, such means comprising an engine,a block interposed between the main cable and the head-support andconnected to the main cable, and a rope for said block operated by saidengine.

6. The combination of a head-support, a running-block suspendedtherefrom, and a main cable detachably secured to said block.

7. The combination of a head-support, a rope-support secured thereto, arope passing through said support, a tension device connected to saidrope, a cable detachably connected to the tension device, and an enginefor operating said tension device.

8. The combination of a support, a ropesupport secured thereto, a ropepassing through said rope-support, a cable, a detachable connectionbetween the cable and the first-mentioned rope, and means for tensioningsaid connection. I

9. The combination of a support, a main cable along which the carriageis adapted to travel, and a running connection between the cable and thesupport.

10. The combination of a support, a main cable, a block suspended fromsaid support, a second block connected. to the cable, a running-ropeconnection to said block, and an engine for operating said rope.

11. The combination of a support, a main cable, a guy extending over ablock secured to the support, a tension device secured to said guy anddetachable at one end and detachably connected to the main cable, atension'rope for said connection, and a reversible drum for operatingsaid rope.

12. The combination of a support, a main cable, a tension deviceinterposed between the main cable and the support connecting the same, atension-rope for said'device, an engine for operating said rope, and asheaveblock located between the device and the engine and through whichsaid rope passes.

In testimony whereof We have hereunto signed our names in the presenceof the subscribing witnesses.

THOMAS SPENOER MILLER. JOSEPH H. DICKINSON.

Witnesses for Thomas Spencer Miller: LoUIs Gr. RUGGLEs,

JOHN SINCLAIR.

Witnesses for J. H. Dickinson:

A. M. DICKINSON, M. MARTINDELL.

